基于FLUENT软件的高炉炉缸“蒜头状”侵蚀模拟研究

Simulation and research on“garlic shape”erosion of blast furnace hearth based on FLUENT software

本文对某1800 m^(3)高炉炉底炉缸结构以及停炉后解剖情况进行了介绍,利用解剖后的侵蚀数据作为计算依据,基于FLUENT软件,通过将死料柱及铁水环流区设置成孔隙度不同的多孔介质计算域,对该1800 m^(3)高炉的炉底炉缸进行建模分析。同时对高炉死铁层、高炉死料柱状态及铁水环流之间的关系进行了分析,并对该级别高炉合理的死铁层深度提出建议。结合高炉解剖数据及流场模拟结果,得出铁水环流是该高炉炉底炉缸形成"蒜头状"侵蚀的主要原因。

In this paper,the bottom and hearth structure of a 1800 m^(3) blast furnace and the anatomy after shutdown are introduced.The erosion data after anatomy are used as the calculation basis,modeling and analyzing the bottom and hearth of the 1800 m^(3) blast furnace by setting deadman and hot metal loop flow area as porous zooms with different porosity based on FLUENT.At the same time,the relationship between the salamander of blast furnace,the deadman of blast furnace and hot metal loop flow is analyzed,and put forward suggestions on the reasonable salamander depth of this class of blast furnace.Combined with the anatomical data and flow field simulation results of the blast furnace,it is concluded that the hot metal circulation is the main reason for the"garlic like"erosion on the bottom and hearth of the blast furnace.